Single lever ring mechanism having rectilinear binder rings



FIG. 1 is a perspective of a single lever ring binder mechanism having rectilinear binder rings;

FIG. 2 is a top plan view thereof;

FIG. 3 is an enlarged view of a portion of thereof;

FIG. 4 is a bottom plan view of FIG. 1;

FIG. 5 is a right side elevational view of FIG. 1, the left side elevational view being a mirror image thereof;

FIG. 6 is a rear end view of FIG. 1;

FIG. 7 is an enlarged view of a portion of FIG. 6; and,

FIG. 8 is a front end view of FIG. 1.

The broken lines are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a single lever ring mechanism having rectilinear binder rings, as shown and described. 